Side frame for railway car trucks



Sept. 3, 1946. H. w. s'rER'rzBAcH 2,406,862

SIDE FRAME RoR RAILWAY CAR TRUCKS' Filed Nov. 29, 194s z sheets-sheet 1gaf' Sept. 3, 1946.

H. w. s'rER'rzBAcH SIDE FRAME FCR RAILWAY CAR TRUCKS 2 sheets-shea 2Filed Nov. 29, 1945 4 (6 *Illlllllll/ Patented Sept. 3, 1946 Harry W.Stertzbach, Columbus, Ohio, assigner to The Buckeye Steel CastingsCompany, Columbus, Ohio Application November 29, 1943,.Seria1 Nu.512,191

This invention relates to railway car trucks and more particularly tocast metal side frames for such trucks.

An object of the invention is to provide a novel construction wherebythe stresses will be more evenly distributed than in the side framesheretofore known, and deformations of the journal box or breakage of themembers of the frame will be eliminated.

With the foregoing object outlined and with other objects in View, whichIwill appear as the description proceeds, the invention consists in thenovel features hereinafter described in detail, illustrated in theaccompanying drawings, and more particularly pointed out in the appendedclaims.

In the drawings:

Fig. l is a side elevation of one-half of a side frame, includingmyimprovements, it being un derstood that the other half is identicalV inconstruction with the half illustrated.

Fig. 2 is a bottom plan View of the same.

Fig. 3 is a fragmentary transverse vertical sectional view taken ongtheline 3 3, of Fig. 2.

Figs. 4 and 5 are sectional views, respectively, taken on the lines 4 4,and 5 5, of Fig. 1.

Fig. 6 is a top plan View of the journal box portion of the side frame.

Fig. 7 is a fragmentary vertical sectional view on the line 1, 1, ofFig. 6.

Fig. 8 is a fragmentary side elevation of a modification.

In accordance with the present invention, the diagonal compressionmember 9 and the diagonal tension member IIJ are both of invertedchannel form. The inclined top plate or web II of the tension membergradually increases in thickness toward and merges with the top plate I2(Fig. '7) of the integral journal box I3, where the top plate of the boXjoins the side wall It! of the inner lug of the box and forms acontinuous connection between this point and the top plate I (Fig. 1) ofthe spring seat member I6. For strengthening purposes, it isadvantageous to have the web of the diagonal tension member join the topof the journal box at the point where the wall of the inner brass lugalso joins the top of the box.

As the side frame is of cast metal, my construction contemplates the useof symmetrical cores (not shown) inside of the box during casting, thebeveled corners Il (Figs. 6 and '7) being used at both the inner andouter corners of the box, with the width of the beveled cores beingequal to the outside width of the diagonal ten- 6 Claims. (Cl. 105 20.6)

l `sion member where it joins the journal box. At

this point', it will be noted in Fig. "I, that the side wall I4 of theinner lug of the journal `box is spaced from the inner wall I8 of thebox.

The spring seat member, in accordance with my invention, is formed inhollow box section, as shown in Fig. 3, with the top plate I5 wider thanthe box section portion, and provided with marginal upstanding inner andouter anges I9 and 2l!Y for retaining the springs, not shown.

An alternative means for joining the bottoms of thediagonal tensionmembers and the spring seat member is illustrated in Fig. 8, in whichthe bottom 2I of each tension member forms an ogee curve, being shapedconvex downwardly under each of the bolster columns 22 and changing toconcave downwardly in a direction toward the journal box or the end ofthe frame. Such constructions strengthen the connection between thediagonal tension members and the spring seat member.

The columns 22 have parti-cylindrical surfaces 23, interrupted by medialvertical guide vflanges 24, adapted to cooperate with correspondinglyshaped surfaces on the bolster, not shown.

The upper portion of the bolster opening 25 is widened for a distance Abelow the top 26 of the frame to permit the passage of bolster lugs, notshown.

From the foregoing, it is believed that the details of my improved sideframe and the constructional advantages thereof will be readilyunderstood by those skilled in the art, and it will be apparent thatchanges may be made in the side frames illustrated without departingfrom the spirit of the invention, as expressed in the following claims:

What is claimed and desired to be secured by Letters Patent ist 1 Arailway car truck side frame comprising diagonal compression and tensionmembers converging toward an end of the side frame, a journal boxintegral with the outer ends of said members and having a substantiallyflat hori- Zontal top, said journal box having inner and outer internallugs provided with side, walls spaced kfrom the side walls of thejournal box, the tension member having an inclined top web whichterminates at and merges with the top of the journalbox at the placewhere the upper end of the wall of the inner lug merges with the top ofthe box, said web gradually increasing in thickness toward the top ofthe journal box, the top of the journal box having internal beveledsurfaces arranged at opposite sides of the lugs ranged at said end ofthe frame and integral with said members, said box having a top and thetension member having a top web merging with said top, the bottom of thetop having four symmetrically placed beveled inner surfaces spaced fromthe front and rear ends of the journal box, each pair of whichtransversely of the frame is spaced a distance equal to the width of thetension member.

3. In a railway car truck side frame, integral tension compression andjour-nal box members, the tension members having a top web merging withthe top of the journal box member, the journal box member having asubstantially horizontal top and inner and outer lugs provided with sidewalls merging at their upper ends with the top of the journal boxmember, said top of the journal box member having internal beveledsurfaces arranged at opposite sides of the lugs and spaced from thefront and rear ends of the journal box.

4. In a railway car truck side frame, integral tension compression andjournal box members, the tension member having a top web merging withthe top of the journal box member, the journal box member having innerand outer lugs Vprovided with side walls merging at their upper endswith the top of the journal box member, said top of the journal boxmember having internal beveled surfaces arranged at opposite sides ofthe lugs and spaced from the front and rear ends of the journal box, andthe beveled surfaces adjacent the inner end of the lugs being insubstantially the same plane as the bottom surface of the web of saidtension member.

5. A railway car truck side frame comprising integral compression,tension, and journal box members, said compression and tension membersconverging toward the journal box, and the compression member having atop web, said journal box member being provided with inner and outersubstantially vertical lugs which are substantially in alignment withthe compression and tension members longitudinally of the frame, saidlugs having side walls spaced inwardly from the side walls of thejournal box, the web of the tension member merging with the top of thejournal box Where the side wall of the inner lug merges with the top ofthe journal box, the top of the journal box having pairs of bottombeveled surfaces, the beveled surfaces of one pair being spaced from thefront and rear ends of the journal box and arranged respectively atopposite sides of the inner lug and being in substantially the samepla-ne as the bottom surface of the web of the tension member.

6. A railway car truck side frame comprising an integral compressionmember, tension member, and journal box, the compression and tensionmembers converging toward the journal box and each bei-ng of invertedchannel shape, a spring seat formed on the medial portion of the tensionmember, and columns connecting the tension and compression members, saidtension member having an inclined top web terminating at and mergingwith the top of the journal box and the top of the spring seat, the topof the spring seat being wider than the remainder of the tension memberand said remainder being of box section, opstanding flanges provided atthe edge portions of the spring seat and merging at their ends with saidcolumns, the top of the journal box having pairs of bottom beveledsurfaces, the beveled surfaces of one pair being spaced from the frontand rear ends of the journal box and arranged respectively at oppositesides of the tension member and being in substantially the same plane asthe bottom surface of the web of the tension member.

HARRY W. STERTZBACH.

